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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Romy:Again thanks for the response. With regard to the most important question, my choice would be to use the standard AM Amorphous C-Core transformers in the short term but the Direct Tube Drive in the long term. As I mentioned elsewhere, I was in t...
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Bob,
Yes, the variants are multiple but the key I feel might be the following: smaller size, less reliance to baffled, smaller size. Or yes, did I mention the smaller size?
The thing that led me to think about the MiniMe incorporation was my recent...
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I would turn upside-down mid bass horns ,mount drivers in Heavy box and cover plastic (ABS ?) horns with very thick layer of stynthetic plaster (the one LeCleach is using to "cast " his horns .So now he'd have horizontal J shape and it would be fairl...
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As a certified non-expert I wonder about 1st order XO with the tweeter, because of the phase issue. Probably stupid, but I always figured that at 180 degrees you could just switch the wires...But I have not tried 1st order on a ribbon for a lon...
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[quote user="Vasyachkin"] i will give you this much - horn loading ribbons is fundamentally not as advantageous as horn loading dynamic drivers. this is because ribbon mass is already close to airload mass (in theory could even be less) and little ex...
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Hi,I have just received a Yamamoto A-02 amplifier from Shigeki. It is a 2A3 / 45 switchable amp, not available in the EU. It is supposed to be Yammies top amplifier. I bought it in JP and sent it to Shigeki for new 230V transformer...
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[quote user="cv"] I see why you want those tap options now - essentially you want to be able to load down the 6e5p but still use all the secondary sections. There may be some frequency response variations in the ultrasonic range by playing the tap ga...
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In theory wideband electronics with very gentle HF slopes are optimal. In practice I have never liked them. For the same reason I detest the 6922 tube vs the 12A series tubes or most less well known. As Romy notes, linearity and measurements in this ...
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Over the course of the last month we have a numerous communication with the RAAL’s Alex. With all my “accuracy” handling of the “Water Drop” tweeters I have eventually terminally damaged the ribbons on my left channel and I asked Alex to send me ribb...
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Continuing to harass the readers of my site and myself with the good news about the performance of my SA8535 driver I would like to post a very educational article about the subject. As I told before, being familiar with sound of ribbons then never i...
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[quote user="Romy the Cat"] The HF Range “F” channel: The 6E6P-DR at 30mA connected at tetrode. The filter is second order with Sowter 9858 Pultec MEQ-5 EQ Inductor 420/277/145/108/61/34 mH) and variable air cap. The variable inductance and capacitan...
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Yes, if you are at 40Hz first order then you are with regular dedicated LF channel and tone is certainly a subject. The entire definition of ULF channel inkstand or LF channel is that ULF channel has no tonal information. It is very same like use twe...
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Just how important are subharmonics and undertones in audio, and how they affect tone? I played around for a while with the Townshend supertweeters, this is a ribbon tweeter that you can barely listen to: you plug it in and put it next to your...
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The EV 350 cones are still available form many sources, they are $25 per cone. There are some other phenolic domes for 1” driver, or smaller. I do not know anyone who does 3”-4” phenolic domes that would make them suitable for MF drivers.
As far as ...
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Decoud, I do reject any speculations about flux modulation in compression drivers as I do presume that it is absolutely negligible. It is like using a SS amp with ultra low output impedance, to drive a ribbon tweeter and to worry about return current...
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It was an audio eventful year and I have experimented and discovered many fascinating things. Here is a brief summary of the 2007 audio-events and a short look what my audio happening will might take please in 2008.
1) In the very ...
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Hmmm...
I like my tweeters +/- "matched" in terms of efficiency, but I am not starting out at 115 dB efficiency. Sure, headroom, practically speaking, is more than a mere luxury. However, is it really that hard to wring out a tweeter, and how muc...
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Romy, sad to hear of your separation. I hope you are ok.
I use one of these to align my horn stacks...
...simple to use, just put it on a camera tripod and wind it up an...
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Though he seems to like running several TTs in parallel, I do not interpret Pham's page to show that he is running more than just one horn system; what I see is an evolution of a system. It looks like, in its latest iteration (under the heading "Syst...
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It’s a bit offtopic, but:[quote user="Paul S"] I haven't seen anything like this in over a decade, and I don't have the patience to wait until I find and acquire something like this, IF it exists. [/quote]The problem is that it does not exist… Simply...
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Hi, My first post, thanks,
Hello to all the members of this forum, I have old cabins altec, the reference is 870B Speaker System, Serial 892, Number 391916, AL75. The woofer is 420Y Biflex. 15"Specifications
http://www.lansingheritage.org/ht...
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OK, now the SA8535 driver is fully broken-in and well-habituated. I have no idea how the “Stage Accompany” suggests using this driver from 1000Hz! From what I observe, at MF this driver sounds very “flat” and very none-impressive. I have suspicion th...
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[quote user="Paul S"]Although the air is charged with anticipation, yet one can never quite anticipate a note or musical effect before it happens, even with a familiar piece. [/quote]
Actually is has less to do with familiarity with a piece but I fe...
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[quote user="RonyWeissman"]The electricity comment is interesting as today I put on some jazz music and the HF is very snappy, excellent! I feel like posting on AA to ask people's opinons if it's the electricity or if my concrete horns are going thro...
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G'Day Rowuk,Thanks so much for the quick replyThe drivers were recommended by the person who made the cabinets. All three are supposed to be quite well regarded.Initially, the project was just going to be 2 x 10" and the Beyma tweeter, which in itsel...
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[quote user="Paul S"] I can report that the G2Si loses the "glycerin" at 10k with the ML2s…. [/quote]
I concur with this finding. Any ribbon tweeter that I heard has "glycerin" tone but it is because the ribbon mostly crossed too low. I would say th...
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Romy, it sounds like, as usual, you have covered a lot of ground already before you put out your first questions about ribbons.FWIW, I presently use Arum Cantus G2Si ribbons, phasing them in at 10k Hz to supplement the Lowther DX4's dreaded...
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[quote user="Paul S"] If you have the Mercury SR2-9013 35mm master Dorati/LSO Nutcracker, that might be a treat [/quote]
Hate that performance. Dorati did not play Tchaikovsky appropriately. Each and single Dorati’s Tchaikovsky piece sound to ...
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The reason that I built the 6C33C preamp was to explore the 6C33C true musical potential like I did with the 845. Not only did I compare the sound of these tubes in power amp, but also in preamp. The reason is that with power amp you might hit some l...
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[quote user="Romy the Cat"]
In my case I found that RAAL ribbon with first order can not deal with dynamics of S2 driver. [/quote]I suspect that my RAAL Lazy Ribbon does not have as much lower frequency output as your RAAL Waterdrop. RAAL refused...
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